Plaiting-machine



T. E. CLARK AND C..W. WARD.

.PLAITING MACHINE.

APPLICATION FILED 1AN.8,191B- RENEWED NOV. 8. 1919.

Patented Feb. 24, 1920.

2 SHEETSSHEET 1- IN VEN TORS WITNESS:

T. E. CLARK AND C. W. WARD.

PLAI'HNG MACHINE.

APPLICATION FILED JAN. 8, I918. RENEWED NOV. 8. I919.

I Patented Feb. 24, 1920.

2 SHEETS-SHEET 2.

IN VEN TORS WITNESS:

:DQ & 9mm 60: 0\ M ATTORNEYS.

UNITED STATES PATENT OFFICE.

THOMAS E. CLARK AND CHARLES W. WARD, OF DETROIT, MICHIGAN; SAID WARD ASSIGNOR TO SAID CLARK.

PLAITING-MACHINE.

Specification of Letters Patent.

Patented Feb. 24, 1920.

Application filed January 8, 1918, Serial No. 210,826. Renewed November 8, 1919. Serial No. 336,731.

1 7 To all whom it may concern:

Be it known that we, THOMAS E. CLARK and CHARLES W. WARD, citizens of the United States, and residents of Detroit, in the county of Wayne and Stat-e of Michigan, have invented new and Improved Plaiting- Machines, of which the following is a specification.

This invention relates to means for heating the fluted rolls of a plaiting machine or similar device, and its object is to provide electric means for heating the rolls to either of two temperatures, as desired.

This invention consists, in combination with a pair of cotiperating rolls and an electric heating element in each roll, means for holding the rolls in proper relation to each other, electric circuits between a current source and said heating elements and a switch in said circuits whereby the heating elements in the rolls may be connected in either series or parallel electrically.

In the accompanying drawings, Figure 1 is a front elevation of this improved plaiting machine. F ig'. 2 is an end elevation thereof. Fig. 3 is a longitudinal section of one of the plaiting rolls. Fig. 4 isa section of a contact ring. Fig. 5 is a diagram of the circuit.

Similar reference characters refer to like parts throughout the several views.

The two rolls 1 and 2 are longitudinally fluted and their corrugations intermesh to properly lait the fabrics which are assed between tliem. One of the rolls may ave a gear 3 secured to one end which gear meshes with any proper driving pinion 4. Both rolls are hollow and may have their ends closed by plugs 5 which carry journals 6. The lower roll has its journal 6 mounted in the upper end of the bearing bracket 7 that rests on the base 8. This base also carries a bearing 9 for the short shaft. that extends into the right hand end of the roll 1.

A pedestal 12 extends up from the base 8 and has an arm 13. On the top of this arm are two lugs 14 which carry a pivot 15 for the lever 16, and on the bottom of this arm 13 are two other lugs 17 which carry a pivot 18 for the flat lever 19. The front end of the lever 19 is extended longitudinally of the rolls to constitute abar or plate 20, to which are secured a bearing bracket 21 for the 'ournal 6 of the up er roll and a bearing racket 22 for the journal 23 of the stubshaft 24 of this upper roll.

A spring 25 has one end connected to the hub of the lever 16 by means of a screw 26 and the other end similarly connected to the bar 20. A11 adjusting screw 27 extends through this spring into the front end of this lever 16. The rear arm of the lever 19 has a round boss 31 adapted to be engaged by the finger 28 on the lever 16. A latch 29 is mounted on the screw 30 on the arm 13 and has a. stop finger 32, a notch 33 and an .operating arm 34. By turning down the screw 27 the pressure between the rolls is increased but should any unusual thickness of cloth be introduced between 'the rolls the spring 25 will permit the upper roll to rise. If the rear arm of the lever is depressed, which is possible when the latch 29 is turned until the notch 33 is below this lever, the finger 28 will slip forwardly off the boss 31 on the lever 19 and the upper roll can then be lifted away from the lower roll. This is impossible when the latch is so turned that the stop finger 32 is against the lever 16. j

A block of insulation consisting of the wide top 36 and the narrower body 37 may be secured to the pedestal by means of the screws 38. This body 37 carries the resilient contact brushes 39, 40 and 41, and these are connected to the posts 42, 43 and 44 on the top 36 by wires which are not shown, except in Fig. 5. As shown in Fig. 3, a heating element 46 of any desired character ismounted on a tube 47 within each roll and wires 48 and 49 connect these units to the insulated contact rings 50 and 5-1. on the shaft .of the upper roll and to the insulated contact. rings 52 and 53 on the shaft of the lower roll.

At any desired position is mounted a switch to control the flow of current to the heating elements. As the structure of the switch is well known, it is shown merely diagrammatically in Fig. 5. 1V hen the insulating switch-handle is swung to the left, as in Fig. 5, a current will flow from the current source over the wire 56, side arm 57 of the switch, wire 58 to the post 43 and brush 41 to the contact ring 53, wire 49 to the heating element 46 of the lower roll, wire 48. contact ring- 52, brush 40, post 44, wire 59, side arm 60 of the switch and wire 61 to the current source. Another portion of current will pass directly over wires 56 and 63, post 42, brush 39, contact ring 51, wire 49, heating element 46 of the upper roll, wire 48, contact ring 50,- brush 40 and thence out to the current source as before. The two heating elements of the rolls are then in parallel.

When the handle 55 is swung to the ri ht, current will pass over the wires 56 an 63 as before to the heating element 46 of the upper roll and thence to the brush 40, but from there will pass to the contact ring '52, wire as, heating element 46 of the lower roll, wire 49', contact ring 53, brush ll, post 43, wire 58, side arm 60 of the switch and. wire 61 to the current source. These heating elements 46 and 4:6 will now be in series and will be heated less than when in parallel. The position of the switch therefore will determine the temperature of the rolls. -Fig. 4 shows a collar 64 of insulating material in which the contact ring 50 is mounted. The insulating collars and the rings carried thereby are suthciently rigid on the shaft not to turn thereon.

The details of construction and proportions of the arts may all be changed by those skilled in the art without departing from the spirt of our invention as set forth in the following claims.

We claim 1. The combination of a pair of fluted hollow rolls, an electric heating element in each roll, a pair of insulated contact rings on each roll and wires connecting each ele- 'ment to the rings on its roll, a switch, and

electric circuits between a current source, the swltch and the contact rings, whereby menses all the current may be caused to .flow through both elements in series or the current is caused to flow through the elements in parallel as may be desired.

2. The combination of a pair of hollow rolls, an electric heating element in each roll, a pair of contact rings on each roll and wires cpnnecting each element to the pair of rings on its roll, a brush for each roll engaging one of the contact rings thereon, a third brush engaging the other two contact rings, a switch, and wires leading from said switch to said brushes.

3. The combination of a pair of hollow rolls, an electric heating element in each roll, a pair of contact rin c on each roll connected tothe element t erein, a sin 1e brush for each roll engaging one of the contact rings thereon, a double brush engaging the other two contact rings, wires connecting one of the single 'brushes to a current source, a switch, and wires connecting the double brush and the second single brush to said switch and the switch to the current source so that the double brush may be connected to the current source when the two connections to the single brushes are of an opposite olarity to that of the double brush and to isconnect said double brush from the current source when the connections to the single brushes differ in polarities.

THQMAS E. CLARK. CHARLES W. WARD. 

